Grinding and polishing clamp and grinding and polishing machine

Abstract

The utility model discloses a grinding and polishing clamp, which comprises a clamping component, a grinding component and a polishing component, the clamping component comprises a clamping sleeve, one end of the clamping sleeve is provided with at least one pair of elastic clamping plates, and the opposite surfaces of the paired clamping plates are arranged in a two-step shape; the clamping rod is movably inserted into the clamping sleeve, a movable block is arranged at one end of the clamping rod, and when the movable block is located between the two-stage step walls of the paired clamping plates, the paired clamping plates are bent back to back; the reset assembly is arranged at the other end of the clamping rod and moves, pushes and pulls the clamping rod. When a product is clamped, the outer surface, to be ground and polished, of the product can be integrally exposed, the outer surface of the product is ground and polished at a time, clamping does not need to be adjusted again, the outer surface of the product cannot be scratched in the clamping, disassembling and assembling processes, and the grinding and polishing quality of the product is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding and polishing equipment, in particular to a grinding and polishing fixture and a grinding and polishing machine. Background Art

[0002] A grinding and polishing fixture is used to clamp a workpiece during grinding and polishing. Currently, the existing grinding and polishing fixtures can fix the workpiece for grinding and polishing. The Chinese utility model patent with the publication number CN220051382U discloses a hand-held fixture for multiple pin specimens. By arranging a plurality of pin specimen fixers at the bottom of the handle, the pin specimens are inserted into the fixers through the openings at the bottom of the fixers, and the pin specimens are clamped in the fixers by the clamping bolts on the side walls of the fixers. However, when clamping the pin specimens with this kind of fixture, the outer surfaces of the pin specimen products cannot be entirely exposed. During grinding and polishing, only the exposed outer surfaces of the products can be ground. If it is necessary to grind the clamped part, the product needs to be readjusted for clamping, which is cumbersome in operation, and it is easy to scrape the ground surface when clamping the ground outer surface. Summary of the Utility Model

[0003] The utility model provides a grinding and polishing fixture. By inserting a pair of elastic clamping plates into the clamping holes of the product and using the expansion and bending of the clamping plates to abut against the inner walls of the clamping holes, the purpose of clamping the product without contacting the outer surface of the product can be achieved.

[0004] To achieve these and other advantages of the present utility model, there is provided a grinding and polishing fixture, including:

[0005] A clamping assembly, which includes:

[0006] A clamping sleeve, at one end of which there are provided at least a pair of elastic clamping plates, and the opposite surfaces of the paired clamping plates are arranged in a two-level stepped shape;

[0007] A clamping rod, which is movably inserted into the clamping sleeve. One end of the clamping rod is provided with a moving block. When the moving block is located between the two-level stepped walls of the paired clamping plates, the paired clamping plates bend backward;

[0008] A reset assembly, which is arranged at the other end of the clamping rod to move and push and pull the clamping rod.

[0009] Preferably, in the grinding and polishing fixture, the reset assembly includes:

[0010] A fixing member, which is detachably arranged at the other end of the clamping rod;

[0011] A reset spring, which is sleeved on the outer periphery of the clamping rod and is located between the fixing member and the clamping sleeve.

[0012] Preferably, in the grinding and polishing fixture, the reset assembly further includes a push-pull tube sleeved on the outer periphery of the clamping rod and located between the fixing member and the reset spring.

[0013] Preferably, in the grinding and polishing fixture, a gasket is arranged between the reset spring and the push-pull tube.

[0014] Preferably, in the grinding and polishing fixture, the fixing member is a fixing nut sleeved on the other end of the clamping rod through a threaded structure.

[0015] Preferably, in the grinding and polishing fixture, the first-step wall and the second-step wall of the clamping plate are connected by a connecting inclined surface.

[0016] Preferably, in the grinding and polishing fixture, the moving block is frustum-shaped, the small-diameter end of the moving block is connected to the clamping rod, and the diameter of the large-diameter end of the moving block is greater than the distance between the second-step walls of the paired clamping plates.

[0017] Preferably, in the grinding and polishing fixture, an insertion inclined surface is arranged on the back surface of the free end of the clamping plate.

[0018] Preferably, in the grinding and polishing fixture, a plug hole coaxial with the clamping rod is arranged on the moving block.

[0019] The present utility model also provides a grinding and polishing machine including the grinding and polishing fixture in any of the above technical solutions.

[0020] The present utility model has at least the following beneficial effects: One end of the clamping sleeve in the present utility model is provided with at least a pair of elastic clamping plates, the opposite surfaces of the paired clamping plates are arranged in a second-step shape, the clamping rod is movably inserted into the clamping sleeve, one end of the clamping rod is provided with a moving block, and the reset assembly is arranged at the other end of the clamping rod to push and pull the clamping rod. When it is necessary to clamp a product during use, the reset assembly pushes and pulls the clamping rod to move and drives the moving block to move until the moving block is located between the second-step walls of the paired clamping plates. The paired clamping plates bend and expand backward under the supporting force of the moving block and abut against the inner wall of the clamping hole on the product to clamp the product. That is, when the present utility model clamps the product, the outer surface of the product to be ground and polished can be integrally exposed, the outer surface of the product can be ground and polished at one time without readjusting the clamping, and the clamping and disassembly process will not scratch the outer surface of the product, ensuring the grinding and polishing quality of the product;

[0021] The structure of the present utility model is simple and it is flexible and convenient to use; the present utility model effectively reduces the problems restricted by the internal structure and the external structure of the product, and greatly increases the manufacturability of automatically grinding and polishing products.

[0022] Other advantages, objects and features of the present utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram when the grinding and polishing fixture in one technical solution of the present utility model clamps a product provided with a clamping hole;

[0024] Figure 2 It is an exploded structural diagram of the grinding and polishing fixture in one technical solution of the present utility model;

[0025] Figure 3 It is a schematic diagram of the positional relationship between the moving block and the clamping plate in one technical solution of the present utility model;

[0026] Wherein, 1 - fixing member, 2 - push-pull tube, 3 - clamping rod, 4 - gasket, 5 - return spring, 6 - moving block, 7 - clamping sleeve, 8 - clamping plate, 9 - insertion inclined surface, 10 - product, 11 - secondary step wall, 12 - connecting inclined surface, 13 - primary step wall. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further describes the present utility model in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0028] It should be understood that the terms such as "having", "comprising" and "including" used herein do not exclude the existence or addition of one or more other elements or their combinations.

[0029] It should be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified; in the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected" and "arranged" should be understood in a broad sense. For example, it can be fixedly connected and arranged, or detachably connected and arranged, or integrally connected and arranged. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The orientation or positional relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0030] Such as Figure 1 、Figure 2 , Figure 3 As shown in Figure 3 , the present utility model provides a grinding and polishing fixture, comprising:

[0031] A clamping assembly, which includes:

[0032] A clamping sleeve 7, one end of which is provided with at least a pair of elastic clamping plates 8, and the opposite surfaces of the paired clamping plates 8 are arranged in a two-stage stepped shape;

[0033] A clamping rod 3, which is movably inserted into the clamping sleeve 7. One end of the clamping rod 3 is provided with a moving block 6. When the moving block 6 is located between the two-stage stepped walls 11 of the paired clamping plates 8, the paired clamping plates 8 bend backward.

[0034] A reset assembly, which is arranged at the other end of the clamping rod 3 to move and push and pull the clamping rod 3.

[0035] The grinding and polishing fixture provided by this technical solution is mainly composed of a clamping assembly for clamping and fixing the product 10 to be ground and polished and a reset assembly for assisting in disassembling the product 10. The clamping assembly includes a clamping sleeve 7 and a clamping rod 3. One end of the clamping sleeve 7 is provided with at least a pair of elastic clamping plates 8. The clamping plates 8 can be integrally formed with the clamping sleeve 7. The opposite surfaces of the paired clamping plates 8 are arranged in a two-stage stepped shape. The clamping rod 3 is movably inserted into the clamping sleeve 7. One end of the clamping rod 3 is provided with a moving block 6 whose size is larger than the distance between the two-stage stepped walls 11 of the paired clamping plates 8, and the moving block 6 is movably arranged between the paired clamping plates 8. The reset assembly is arranged at the other end of the clamping rod 3 to move and push and pull the clamping rod 3. When the clamping sleeve 7 is fixed and the clamping rod 3 moves under the pushing and pulling action of the reset assembly, when the moving block 6 moves to between the first-stage stepped walls 13 of the paired clamping plates 8, the paired clamping plates 8 are in an undeformed state. At this time, the clamping plates 8 can be inserted into the clamping holes on the product 10, and then when the moving block 6 moves to between the two-stage stepped walls 11 of the paired clamping plates 8, the paired clamping plates 8 bend backward and expand under the supporting force of the moving block 6 and abut against the inner wall of the clamping hole of the product 10 to clamp the product 10.

[0036] The working principle of the grinding and polishing fixture provided by this technical solution is as follows: The position of the clamping sleeve 7 is fixed, and the reset assembly pushes and pulls the clamping rod 3 to move and drives the moving block 6 to move. When the moving block 6 moves between the first-step walls 13 of the paired clamping plates 8, the paired clamping plates 8 are in an undeformed state. At this time, the product 10 to be ground and polished can be sleeved on the clamping plate 8 through the prefabricated clamping holes thereon. Then, when the moving block 6 moves between the second-step walls 11 of the paired clamping plates 8, the paired clamping plates 8 bend and expand backward under the supporting force of the moving block 6, and abut against the inner wall of the clamping hole of the product 10 to clamp the product 10. After the product 10 is clamped, grinding and polishing can be carried out. After the grinding and polishing is completed, the moving block 6 can be moved between the first-step walls 13 of the paired clamping plates 8 again. The paired clamping plates 8 return to their original state under the action of their own elastic force, and at the same time, the clamping force on the product 10 disappears. Then, the product 10 is taken off and the next product 10 to be ground and polished is replaced;

[0037] Or, the position of the clamping sleeve 7 is fixed, and the reset assembly pushes and pulls the clamping rod 3 to move and drives the moving block 6 to move. When the moving block 6 moves between the second-step walls 11 of the paired clamping plates 8, the paired clamping plates 8 bend and expand backward under the supporting force of the moving block 6, increasing the distance between the paired clamping plates 8. Then, the product 10 to be ground and polished is inserted between the paired clamping plates 8 through the prefabricated connecting rod thereon. Then, the moving block 6 is moved between the first-step walls 13 of the paired clamping plates 8. The paired clamping plates 8 gradually return to their original state under the action of their own elastic force, reducing the distance between them and clamping the connecting rod, indirectly clamping the product 10. After that, the product 10 can be ground and polished. After the grinding and polishing is completed, the moving block 6 can be moved between the second-step walls 11 of the paired clamping plates 8 again, and the paired clamping plates 8 are bent and expanded backward again, increasing the distance between the paired clamping plates 8, canceling the clamping of the connecting rod, and then the product 10 is taken off and the next product 10 to be ground and polished is replaced.

[0038] The utility model has at least the following beneficial effects: At least one pair of elastic clamping plates 8 is arranged at one end of the clamping sleeve 7. The opposite surfaces of the paired clamping plates 8 are arranged in a second-step shape. The clamping rod 3 is movably inserted into the clamping sleeve 7. A moving block 6 is arranged at one end of the clamping rod 3. The reset assembly is arranged at the other end of the clamping rod 3 to push and pull the clamping rod 3. When it is necessary to clamp the product 10 prefabricated with clamping holes during use, the reset assembly pushes and pulls the clamping rod 3 to move and drives the moving block 6 to move until the moving block 6 is located between the second-step walls 11 of the paired clamping plates 8. The paired clamping plates 8 bend and expand backward under the supporting force of the moving block 6 and abut against the inner wall of the clamping hole on the product 10 to clamp the product 10. That is, when the utility model clamps the product 10, the outer surface of the product 10 to be ground and polished can be exposed as a whole, and the outer surface of the product 10 can be ground and polished at one time without readjusting the clamping position, and the outer surface of the product 10 will not be scratched during the clamping and disassembly process, ensuring the grinding and polishing quality of the product 10.

[0039] In another technical solution, as Figure 1 , Figure 2 , Figure 3 shown, in the grinding and polishing fixture, the reset assembly includes:

[0040] A fixing member 1, which is detachably arranged at the other end of the clamping rod 3;

[0041] A reset spring 5, which is sleeved on the outer periphery of the clamping rod 3 and is located between the fixing member 1 and the clamping sleeve 7. The two ends of the reset spring 5 can respectively abut against the fixing member 1 and the clamping sleeve 7; pushing the fixing member 1 in the direction close to the clamping sleeve 7, the fixing member 1 pushes the clamping rod 3 to move in the clamping sleeve 7, and then can drive the moving block 6 to move between the first-step walls 13 of the paired clamping plates 8, and at the same time the reset spring 5 is compressed; releasing the fixing member 1, under the elastic force of the reset spring 5, the fixing member 1 moves in the direction away from the clamping sleeve 7, and then drives the clamping rod 3 to move in the direction away from the clamping sleeve 7, and then can drive the moving block 6 to move between the second-step walls 11 of the paired clamping plates 8, and at the same time the reset spring 5 returns to its original state; indirectly pushing the moving block 6 to move through the elastic force of the reset spring 5, eliminating the pulling and reset operation of the clamping rod 3, which saves space and energy compared with driving the clamping rod 3 to move by a cylinder and an oil cylinder, and effectively reduces the manufacturing cost.

[0042] In another technical solution, as Figure 1 , Figure 2 , Figure 3 shown, in the grinding and polishing fixture, the reset assembly further includes a push-pull tube 2, which is sleeved on the outer periphery of the clamping rod 3 and is located between the fixing member 1 and the reset spring 5. The two ends of the push-pull tube 2 can respectively abut against the reset spring 5 and the fixing member 1; shortening the use length of the reset spring 5 to reduce vibration.

[0043] In another technical solution, as Figure 1 , Figure 2 , Figure 3 shown, in the grinding and polishing fixture, a gasket 4 is arranged between the reset spring 5 and the push-pull tube 2. The gasket 4 has the functions of noise reduction and shock absorption, and can reduce the wear of the reset spring 5 and the push-pull tube 2.

[0044] In another technical solution, in the grinding and polishing fixture, the fixing member is a fixing nut, which is sleeved on the other end of the clamping rod through a threaded structure. It is convenient for disassembly, installation and adjustment.

[0045] In another technical solution, as Figure 3As shown, in the polishing fixture described above, the first-step wall 13 and the second-step wall 11 of the clamping plate 8 are connected by a connecting inclined surface 12 for transition. This provides buffering for the movement of the moving block 6 and has a guiding effect, preventing the moving block 6 from colliding violently with the second step and causing damage to the moving block 6 and the clamping plate 8.

[0046] In another technical solution, as Figure 2 , Figure 3 shown, in the polishing fixture described above, the moving block 6 is frustum-shaped, and the small-diameter end of the moving block 6 is connected to the clamping rod 3. Therefore, the diameter of the large-diameter end of the moving block 6 is greater than the distance between the second-step walls 11 of the paired clamping plates 8. The inclined surface of the frustum-shaped moving block 6 further provides buffering for its movement, preventing the moving block 6 from colliding violently with the second step and causing damage to the moving block 6 and the clamping plate 8. When the moving block 6 moves from the first-step wall 13 to the second-step wall 11, the clamping plate 8 expands and unfolds continuously towards the inner wall direction of the clamping hole of the product 10 to clamp the product 10; adjusting the position of the moving block 6 when it moves to the second-step wall 11 can adjust the clamping degree of the clamping plate 8 on the product 10.

[0047] In another technical solution, as Figure 1 , Figure 2 , Figure 3 shown, in the polishing fixture described above, a plugging inclined surface 9 is provided on the back surface opposite to the free end of the clamping plate 8. This facilitates the clamping plate 8 to be aligned and moved into the clamping hole of the product 10.

[0048] In another technical solution, in the polishing fixture described above, a plugging hole coaxial with the clamping rod is provided on the moving block. This avoids the connecting rod of the product from colliding with the moving block when it is inserted between the paired clamping plates, affecting the clamping effect. The present invention also provides a polishing machine, including the polishing fixture in any of the above technical solutions.

[0049] The number of devices and the processing scale described here are used to simplify the description of the present invention. The applications, modifications, and variations of the present invention are obvious to those skilled in the art.

[0050] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to specific details and the illustrated and described examples here.

Claims

1. Grinding and polishing fixture, characterized in that: include: A clamping assembly comprising: A clamping sleeve, one end of which is provided with at least one pair of elastic clamping plates, and the opposite surfaces of the pair of clamping plates are arranged in a two-stage step shape; A clamping rod, which is movably inserted in the clamping sleeve, and a moving block is provided at one end of the clamping rod. When the moving block is located between the secondary step walls of the pair of clamping plates, the pair of clamping plates bends in opposite directions; A reset assembly is arranged at the other end of the clamping rod to move and push and pull the clamping rod.

2. The grinding and polishing fixture according to claim 1, characterized in that: The reset component comprises: A fixing member, which is detachably arranged at the other end of the clamping rod; A return spring is sleeved on the outer periphery of the clamping rod and is located between the fixing member and the clamping sleeve.

3. The grinding and polishing fixture according to claim 2, characterized in that: The reset assembly also includes a push-pull tube, which is sleeved on the outer periphery of the clamping rod and is located between the fixing member and the reset spring.

4. The grinding and polishing fixture according to claim 3, characterized in that: A gasket is arranged between the return spring and the push-pull tube.

5. The grinding and polishing fixture according to any one of claims 2 to 4, characterized in that: The fixing piece is a fixing nut which is sleeved on the other end of the clamping rod through a threaded structure.

6. The grinding and polishing fixture according to claim 1, characterized in that: The primary step wall and the secondary step wall of the clamping plate are transitionally connected via a connecting slope.

7. The grinding and polishing fixture according to claim 1, characterized in that: The moving block is in a truncated cone shape, and the small diameter end of the moving block is connected to the clamping rod, so the diameter of the large diameter end of the moving block is greater than the distance between the secondary step walls of the paired clamping plates.

8. The grinding and polishing fixture according to claim 1, characterized in that: An inserting inclined surface is arranged on the opposite side to the free end of the clamping plate.

9. The grinding and polishing fixture according to claim 1, characterized in that: The moving block is provided with a plug-in hole coaxial with the clamping rod.

10. A grinding and polishing machine, characterized in that: A grinding and polishing fixture comprising any one of claims 1 to 9.

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